function Dog(name) {
    this.name = name;
}

// 请只修改这条注释以下的代码
Dog.prototype = {
    constructor: Dog,
    numLegs: 2,
    eat: function() {
        console.log("nom nom nom");
    },
    describe: function() {
        console.log("My name is " + this.name);
    }
};
